Javellana, J. L. (1998). Estrada on Echegaray: Too late, too late . Philippine Daily Inquirer.
芝加哥风格引文Javellana, Juliet Labog. "Estrada on Echegaray: Too Late, Too Late ." Philippine Daily Inquirer 1998.
MLA引文Javellana, Juliet Labog. "Estrada on Echegaray: Too Late, Too Late ." Philippine Daily Inquirer, 1998.
警告：这些引文格式不一定是100％准确.